24AA02-I/MS

Memory IC Overview

The Microchip Technology 24AA02-I/MS is a 2-Kbit (256 x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire I2C compatible serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device utilizes low-power CMOS technology, supporting industrial temperature grades (-40°C to +85°C). Key electrical characteristics include a maximum read current of 1 mA and standby current of 1 µA. It incorporates an 8-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression.

Memory IC Feature Summary

• Supports bidirectional data transfer using a standard two-wire serial bus protocol compatible with I2C.
• Includes an 8-byte page write buffer to optimize data throughput during sequential write operations.
• Features hardware write protection that inhibits all memory writes when the WP pin is tied to VCC.
• Integrates Schmitt trigger inputs and filter circuits to suppress noise spikes on the SCL and SDA lines.

Memory IC Applications

• Data logging in battery-powered systems requiring low standby current
• Configuration storage for microcontrollers and embedded devices
• Calibration data retention in industrial instrumentation

Memory IC Procurement Notes

Verify the specific suffix 'I/MS' corresponds to the Industrial temperature range and MSOP package. Confirm the operating voltage requirements align with the 1.7V minimum specification for the 24AA02 series. Ensure the design accounts for the open-drain nature of the SDA line by including appropriate pull-up resistors as specified in the datasheet timing parameters.

Memory IC Selection Notes

Select this component for applications requiring low-voltage operation down to 1.7V and high endurance. The 24AA02 variant supports higher speed operation compared to lower voltage variants at voltages below 2.5V. Consider the MSOP package dimensions for space-constrained PCB layouts. Verify compatibility with the host controller's I2C clock frequency limits within the specified voltage range.

Memory IC Part Context

This part belongs to the 24XX02 family of 2-Kbit serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24LC02B and 24FC02, which differ primarily in minimum operating voltage and maximum clock frequency specifications. The 24AA02 is distinguished by its ability to operate at 1.7V while maintaining 400 kHz performance.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24AA02T-I/MS, 24AA02-E/MS.